Pattern-feed mechanism for looms



C. HUGO BATTER FEED MECHANISM F611 LOOMS Filed June '7, 1921 3 Sheets-Sheet l C. HUGO PATTERN FEED MECHANISM F03 LOOMS Jel7 1924;

' s sheets-s am Q Filed June '7, 1921 June 17 1924.

C. HUC-ZO ERN FEE-U MECHANISM FDR LOOMS PATT Filed June 7', 1921 Patented June 17, 15924;,

CHARLES HUGO, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE M. J. WHI'ITALL ASSOCIATES, A VOLUNTARY ASSOCIATION 0F MASSACHUSETTS.

PATTERN-FEED HIECHANISM FO'R LOOMS.

To all whom it may concern:

Be it known that 1, CHARLES HUGO, a citi' zen of the United States, residing at VVorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Pattern-Feed Mechanism for Looms, of which the following is a specification.

This invention relates to improvements in pattern feed mechanism for looms by which the direction and extent of the pattern chain feed may be varied. In a prior Patent No. 981,762 issued to me January 17, 1911, I have fully set forth the advantages to be derived from advancing the pattern cards in a carpet loom or other similar loom two spaces in either direction at each feeding movement.

It is the object of my present invention to provide means by which a pattern chain may be advanced one, two, three or more spaces in either direction at each operation of the feeding mechanism. Movement of the pattern cards by threes is desirable when three different patterns are used, such as a border pattern, an end body pattern and a center body pattern. It will be understood that any one of the three patterns may be repeated in either forward or reverse direction as often as is desired.

7 With this general object in view, impor tant features of my invention relate to improved feeding devices by which a pattern cylinder may be advanced in either direction either one, two or three spaces as desired, to means for controlling the amount of feed, and to means for yieldingly holding the pattern cylinder from movement when in normal position but for releasing the cylinder during the feeding operation.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of my invention is shown in the drawings in which Fig. 1 is a side elevation of my improved pattern feeding mechanism;

Fig. 2 is a partial plan view thereof;

Fig. 3 is a side elevation, partly in section, taken along the line 33 in Fig. 2;

Fig.4 is a similar view taken along the line 44 in Fig.- 2;

Serial No. 475,821.

Fig. 5 is also a side elevation of the parts shown in Fig. 2 but in a different position,-

Fig. 6 is a plan view of the yielding locking'device;

Fig. 7 is a side elevation of the locking de- V10; together with its actuating mechanism, an

Fig. 8 is a detail view of the means for.

moving the locking device.

Referring to Fig. 1, I have shown a jacquard frame 10 having the usual lifter board 11 (Fig. 2) and'needles 12 controlled by pattern cards 13 which are advanced and rendered operative by a pattern cylinder 14. As shown in the drawings, the cylinder 14 is provided with six fiat faces against which the cards rest and is also provided with six projecting studs 15 which are engaged by the end 16 (Fig. 1) of the locking slide 17. A. coil spring 18 (Fig. 6) normally forces the slide against two of the studs, and thus yieldingly positions the cylinder with one of its faces presented to the ends of the needles 12. The cylinder 14 is mounted on a shaft 19 supported in bearings 20 mounted on sliding bars 21. A gear 22 is rotatably mounted at the end of one of the sliding bars 21 and meshes with a pinion 23 secured to the end of the shaft 19. As shown herein, the gear 22 is three times the size of the pinion 23. The slide bars 21 are mounted in fixed bearings on the frame 10 and their left hand ends as viewed in Fig. 1 are provided with studs 24 each extending through a slot 25 in an arm 26 fixed to a rock shaft 27. An actuating arm 28 is also secured to the rock shaft 27 and is normally held against an adjustable stop 29 by a spring 30. The arm 28 is intermittently lifted by engagement with a shoulder 31 in a forked rod 32. The rod 32 is connected at its lower end to an arm 33 which, in turn, is connected by a. link 34 to a lever 35 having a cam roll 36 engaging a continuously rotating cam 37 By this mechanism the rod 32 is raised intermittently and during the upper portion of its travel engages the arm 28 and is thus effective through the arms 26 to move the guide bars 21, thus carrying the cylinder 14. outward, away from" the" endscf the jacquard needles. The arm 33 is also con nected through its pivot shaft and connections not shown to operate the lifter board 11.

During this outward movement, the cylinder is advanced by feeding mechanism about to be described. The gear 22 is provided with a series of lateral studs or pins 38 adapted to be engaged by the hook-shaped ends of feed pawls 39' and 40. These pawls are made in two parts, as best shown in Fig. 5, and a bolt and slot connection is pro vided by which the length of the pawls may be adjusted. The pawls are pivoted on a cross bar 41 (Fig. 1) mounted on a slide 42 and they are connected together by a link 43. The lower pawl is provided with a rearwardly and upwardly extending arm. 43 to which a cord 44 and hook 45 may be attached.

The normal position of the pawls is shown in Fig. 1, with the upper pawl 39 operative, but this position may be reversed'by placing a weight on the hook 45 suliicient to overcome the weight of the pawls, thus swinging the lower pawl 40 to operative position. A bell crank 46 is mounted on the frame 10 and has a bolt and slot connection with the slide 42. A spring 47 normally holds the parts yieldingly in the posi tion shown in Fig. 1, further movement being prevented by one of the slide bearings. A stud 48 on the arm 33 engages the horizontal arm of the bell crank 46 and moves the slide 42 and pawls 39 and 40 to the left as the arm 33 approaches its upper limit of movement.

A chain 50 (Fig. 7) connects the locking device slide 17 to an arm 51 on a cross shaft 52 having bearings in the frame 10. An arm 53 on said shaft is connected by a link 54 to a lever 55 (Fig. 8) having a cam roll 56 engaged by a continuously rotating cam 57. The slides 21 which support the cylinder are provided with adjustable brackets 58 ('Fig. 6) to which is secured the cross board 59 which resets the needles 12.

Having described the construction of my improved feed mechanism I will now describe its operation. Starting with the parts in the position shown in Fig. 1, the cam 37 will raise the link 34 and arm 33, carrying upward the lifter board 11 and also the rod The shoulder 31 of the rod 32 presently engages the arm 28, causing swinging movement of the arm 26 to advance the slides 21 supporting the cylinder 14. At the same time the cross board 59 resets the needles 12.

i is the cylinder 14 is moved away from the needles. the cam 57 (Fig. 8) moves the arm 51 (Fig. 7 to the left and withdraws the head 16 of the holding device 17 from the studs 15 in the end of the cylinder. As the upward movement of the arm 33 continues, the stud 48 on the arm 33 engages the bell crank 46 and moves the slide 42 to the left (in Fig. 1). The combined mov ment of the cylinder and slide in opposite directions causes one of the pawls 39 or 40 to engage the pin teeth 38 and thus partially rotate the gear 22.

The g ratio between the gear and the pinion 23 causes a grea ly increased an gular movement of the cylinder 14, the move ment of the cylinder herein shown three times the movement of the gear. thus combining a movement of the cy inde to the right with movement of the f pawl to the left. a wide range of movemeis available and it is easily possible to advance the cylinder three spaces or 180 a each feedii movement. By changing the length of the pawls 39 and 40 this movement may be reduced to an advance of only one or two spaces instead of three spaces if so desired.

The head 16 of the locking device 1'? is held away from the stud 15 in the cylinder until the feeding movement has been. com pleted, after which the cam 57 releases the locking device and the spring 18 advances the same until the end 16 thereof yieldingly engages the studs before the return movement of the cylinder. The usual hand lever 60 and cord 61 (Fig 1) are provided fo advancing the cylinder one or more spaces when it is desired. to change from one pattern to another.

Having thus described my invention will be evident that changes and modifications can be made therein by those skilled in the art within the spirit and scope thereof set forth in the claims, and T do not wish to be otherwise limited to the details herein disclosed but what I claim is 1. In a loom, a pattern cylinder having a plurality of flat faces, a single feeding de vice effective to advance said cylinder half of a cylinderrevolution at each siintermittent actuation of said feeding cevice, and means to reduce the angular movement resultant from each such actuation of said feeding device to the angular equivalent of a less number of cylinder faces.

2. In a loom, a pattern feed mechanism comprising a pattern cylinder, a device to yieldingly hold said cylinder from movement, means to slide said cylinder outward during the cylinder feed, and means to hold said device from movement with said cylinder during the cylinder feed and to there after restore said device to holding position before the return of said cylinder to initial position.

In a. loom, a pattern cylinder, a feeding pawl, means to move said pattern cylinder from normal position in one direction, means to advance said feed pawl from normal position in the opposite direction, and means to hold said cylinder yieldingly in position.

4. In a loom, a pattern cylinder, a feeding pawl, means to move said pattern cylinder from normal position in one direction, means to advance said feed pawl from normal position in the opposite direction, and means to hold said cylinder yieldingly in position said holding means being inoperative during the angular movement of the cylinder.

5. In a loom. a pattern feed mechanism comprising a pattern cylinder having a plurality of flat faces, a pinion on said cylinder, a substantially larger gear meshing with said pinion a feed pawl and ratchet effective to intermittently advance said gear and feed said cylinder through an angle equivalent to one cylinder face, means to move said feed pawl uniformly with an excess feeding movement, and means to increase the an gular movement of said cylinder resultant from each such uniform actuation of said feeding pawl to the angular equivalent of more than one cylinder face,

6. In a loom, a pattern feed mechanism comprising a pattern cylinder, a pinion on said cylinder, a substantially larger gear meshing with said pinion, feed pawls for said gear, separate sliding supports for said cylinder and feed pawls, and means to move said supports in opposite directions to give said pawls an extensive operating movement relative to said cylinder.

In testimony whereof I have hereunto affixed my signature.

CHARLES HUGO. 

